﻿/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2009 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * FCKXml Class: class to load and manipulate XML files.
 * (IE specific implementation)
 */

FCKXml.prototype =
{
    LoadUrl : function( urlToCall )
    {
        this.Error = false ;

        var oXmlHttp = FCKTools.CreateXmlObject( 'XmlHttp' ) ;

        if ( !oXmlHttp )
        {
            this.Error = true ;
            return ;
        }

        oXmlHttp.open( "GET", urlToCall, false ) ;

        oXmlHttp.send( null ) ;

        if ( oXmlHttp.status == 200 || oXmlHttp.status == 304 || ( oXmlHttp.status == 0 && oXmlHttp.readyState == 4 ) )
        {
            this.DOMDocument = oXmlHttp.responseXML ;

            // #1426: Fallback if responseXML isn't set for some
            // reason (e.g. improperly configured web server)
            if ( !this.DOMDocument || this.DOMDocument.firstChild == null )
            {
                this.DOMDocument = FCKTools.CreateXmlObject( 'DOMDocument' ) ;
                this.DOMDocument.async = false ;
                this.DOMDocument.resolveExternals = false ;
                this.DOMDocument.loadXML( oXmlHttp.responseText ) ;
            }
        }
        else
        {
            this.DOMDocument = null ;
        }

        if ( this.DOMDocument == null || this.DOMDocument.firstChild == null )
        {
            this.Error = true ;
            if (window.confirm( 'Error loading "' + urlToCall + '"\r\nDo you want to see more info?' ) )
                alert( 'URL requested: "' + urlToCall + '"\r\n' +
                            'Server response:\r\nStatus: ' + oXmlHttp.status + '\r\n' +
                            'Response text:\r\n' + oXmlHttp.responseText ) ;
        }
    },

    SelectNodes : function( xpath, contextNode )
    {
        if ( this.Error )
            return new Array() ;

        if ( contextNode )
            return contextNode.selectNodes( xpath ) ;
        else
            return this.DOMDocument.selectNodes( xpath ) ;
    },

    SelectSingleNode : function( xpath, contextNode )
    {
        if ( this.Error )
            return null ;

        if ( contextNode )
            return contextNode.selectSingleNode( xpath ) ;
        else
            return this.DOMDocument.selectSingleNode( xpath ) ;
    }
} ;
